Abstract
The determination of particle size distribution in concentrated polydisperse fat emulsions measured by ultrasonic attenuation spectrum is studied in this paper. Based on theoretical analysis, ultrasonic attenuation spectrum of fat emulsion samples containing different droplet concentrations (1∼20%) is measured over the range of 2∼13MHz. Then the droplet size and distribution are determined by processing the experiment data with inversion arithmetic. The particle size distribution of original sample determined by ultrasonic spectrum gives excellent agreement with that of diluted sample measured by an optical instrument TSM(Totally Scattering Measurement). This indicates that ultrasonic spectrum is capable of determining the particle size distribution and dispersed‐phase volume fraction of concentrated fat emulsions in a non‐destructive approach.
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